Damping of inhomogeneities in neutralino dark matter
The lightest supersymmetric particle, most likely the neutralino, might account for a large fraction of dark matter in the Universe.We show that the primordial spectrum of density fluctuations in neutralino cold dark matter (CDM) has a sharp cut-off due to two damping mechanisms: collisional damping during the kinetic decoupling of the neutralinos at (10 MeV) and free streaming after last scattering of neutralinos. The cut-off in the primordial spectrum defines a minimal mass for CDM objects in hierarchical structure formation. For typical neutralino and sfermion masses the first gravitionally bound neutralino clouds have masses above 10 -6 M .
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| Author: | Dominik J. Schwarz, Stefan Hofmann, Horst Stöcker |
|---|---|
| URN: | urn:nbn:de:hebis:30-21431 |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 17.11.2005 |
| Year of first Publication: | 2001 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| Tag: | dunkle Materie ; neutralino; supersymmetrische Partikel dark matter ; neutralino; supersymmetric particle |
| Source: | In *Budapest 2001, High energy physics* hep2001/20. [astro-ph/0110601] |
| HeBIS PPN: | 22645424X |
| Institutes: | Physik |
| Dewey Decimal Classification: | 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Veröffentlichungsvertrag für Publikationen ohne Print on Demand |
